Figure 2From: Treatment of Hereditary Angioedema: items that need to be addressed in practice parameterTime between onset of prodromal symptoms and their next HAE attack. This bar graph demonstrates the timing of acute attacks after the onset of prodromal symptoms. 45.5% of all patients had an attack within 24 hours of a prodromal symptom and 54.5% reported that their attack came 24 hours after the onset of the prodromal symptoms. However, the majority reported an attack within the first 12 hours after the onset of the prodromal symptom.Back to article page